@jb0176 , have gone through your interactions with @mesquitebean and I am still unsure of the situation-- so I will list what I get from this ( please correct me or confirm my understanding )
1. you a citizen of another country, came here on a work visa ( or ? , what type ). when did you enter the USA / Was this your only stay in the USA in the last three years ( 2018, 2019 and 2020 )
2. You have lived in the USA long enough to meet the substantial test in 2020 ( exact date would be useful)-- see above questions
3. It seems you have now gone back to your home country ( or another country ) but you had income from the USA during 2020
4. Because of the above you want to file as dual status person -- first part of the year 2020 as a resident and the second part ( which months and did you have any US sourced income in those months ? ).
I will await your answers before answering specifically to your situation.
However, in general "can you use TurboTax to file a dual status return " --- you can kind of . You can prepare the Resident portion of the return using TurboTax, Print, Hand print on page 1 "DUAL STATUS RETURN ", date , sign. Now go to the IRS site , download the 1040-NR, fill it out ( it is a fillable .pdf), print, sign date. Now attach the form 1040 ( Resident return ) and the Non-Resident Return ( form 1040-NR ) and mail in the whole package to the IRS for your area.
